2020 신년 메시지

류정호,황덕형,박재규,손상득,고광배,이기수,류승동,곽은광,김향숙,유영란,강환식,최정원,이옥희,함선호,조성환,이우주 기독교대한성결교회 활천사 2020 활천 Vol.794 No.1

살리는 샘 : 종교개혁 500주년을 맞이하여

류정호 기독교대한성결교회 활천사 2017 활천 Vol.758 No.1

디지털 뉴스미디어 법적 지위 부여의 한계 -규제법규 적용의 문제점을 중심으로

류정호 언론중재위원회 2015 미디어와 인격권 Vol.1 No.1

Korean media has been traditionally grouped into two categories - one is news produced by media allowed, approved, and registered according to media law, and the other is general expressions produced by a body that did not follow such procedures. Recently, new news platforms such as curation news services, news funding, podcasts, and MCNs (Multi Channel Networks) have appeared. These appearances changed the behavior of news consumption and caused disputes about the legal position of the platforms themselves. This situation is naturally related to the issue having a big influence on regulation of expression. That is, present media law defines both printing media and broadcasting media as media from the viewpoint of sociology of occupation so that the present media law equally applies to emerging digital news media. This results in problems such as uncertainty regarding regulated objects or problems with scope decisions. Accordingly, this study aimed to review limitations in the legal position of digital news media by present the regulating law. First, the author introduced characteristics of digital news media that cause uncertainty regarding the problem of regulated objects. In addition, the author summarized the requirements for providing a legal position defined in present media law to internet newspapers, internet news service providers, and internet broadcasting, etc. On the other hand, by applying such legal requirements to major domestic emerging digital news media, this study analyzed the effectiveness of the method to provide legal media status through the present legal apparatus. As a result, it was found that, when providing a position for emerging digital news media within the framework of the present media law, this cannot include actual media activity or can limit the distribution of free opinion and information. 우리나라는 전통적으로 미디어법에 의해 허가․승인․등록된 언론사가 생산한 뉴스와 그렇지 않은 일반 표현물을 분리하여 이원적으로 규제해 왔다. 최근 뉴스큐레이션서비스, 뉴스펀딩, 팟캐스트, MCN(Multi Channel Network) 등 신생 뉴스플랫폼의 등장은 뉴스소비 행태를 변화시키는 동시에 플랫폼 자체의 법적 지위에 대한 논란을 야기하고 있다. 이러한 상황은 자연스럽게 표현물 규제의 근간을 흔드는 이슈로 연결된다. 즉, 직업사회학적 관점에서 인쇄미디어와 방송미디어를 언론으로 규정하고 있는 현행 미디어법이 신생 디지털 뉴스미디어에도 동일하게 적용되면서 규제 대상의 불명확성 문제 또는 범위설정의 문제를 낳고 있는 것이다. 따라서 본 논문은 현행 미디어법에 의한 디지털 뉴스미디어의 법적 지위 부여의 한계점을 검토하는 것을 목적으로 하였다. 이를 위해 먼저, 규제 대상의 불명확성 문제를 야기하고 있는 디지털 뉴스미디어의 특성을 소개하였다. 그리고 현행 미디어법에서 규정하고 있는 인터넷신문, 인터넷뉴스서비스사업자, 인터넷방송 등의 법적 지위 부여 요건을 정리하는 한편, 국내의 주요 신생 디지털 뉴스미디어에 그러한 법적 요건을 적용하여 현행 미디어법에 의해 언론지위를 부여하는 방식의 실효성을 점검하였다. 그 결과, 현행 미디어법의 틀 안에서 신생 디지털 뉴스미디어에 언론성을 부여할 경우, 실질적 언론행위를 포섭하지 못하거나 자유로운 의견과 정보 유통에 제약을 가져올 수 있는 것으로 나타났다.

Multiferroic BiFeO3 Thick Film Fabrication by Aerosol Deposition

류정호,백창우,박동수,정대용 대한금속·재료학회 2010 METALS AND MATERIALS International Vol.16 No.4

BiFeO3 (BFO) multiferroic materials in the crystalline phase require very delicate processing conditions. In order to fabricate a high quality BFO thick film, aerosol deposition (AD) was employed and the phase evolution and multiferroic properties of the film were investigated for different annealing temperatures. A BFO thick film annealed at 500 °C had a dielectric constant of 80 at 1 kHz and possessed ferroelectric characteristics. At an applied electric field of ~900 kV/cm, the remaining polarization and coercive field (Ec) were approximately 7.5 μC/cm2 and 370 kV/cm, respectively. In addition, the BFO thick film fabricated via AD and annealed at 500 °C showed weak ferromagnetic behavior between -1250 Oe and +1250 Oe and was saturated at the higher magnetic field strength, showing ferromagnetic behavior.

원심주조법에 의한 TiAl 합금의 제조 및 미세구조 분석

류정호,이호준,조현수,팽종민,박종범,이정일,Ryu, Jeong Ho,Lee, Ho Jun,Cho, Hyun Su,Paeng, Jong Min,Park, Jong Bum,Lee, Jung-Il 한국결정성장학회 2017 韓國結晶成長學會誌 Vol.27 No.5

본 연구에서는 자동차 터보차저(turbo charger)용 터빈휠을 제조하기 위하여 고속원심주조법을 이용하여 TiAl 합금을 주조하였다. 여러 가지 조성의 주형을 사용하여 주조결함이 최소화 되는 최적의 몰드 조건을 찾고자 하였으며, 주조된 TiAl 합금의 결정구조와 미세조직을 고찰하였다. TiAl 샘플의 XRD 분석 결과 ${\gamma}$-TiAl 상과 ${\alpha}_2-Ti_3Al$ 상으로 구성되어 있음을 확인하였으며, 광학현미경과 FE-SEM 분석을 통하여 TiAl 샘플은 6-fold 및 4-fold 대칭성으로 이루어진 두 개의 수지상(dendrite) 형태로 이루어져 있음을 확인할 수 있었다. 또한 샘플의 단면에서 표면과 가까운 지점과 내부에서 측정한 원소함량의 차이를 확인할 수 있었으며, 마이크로비커스 경도계를 이용하여 표면에서 $50{\mu}m$ 미만의 영역에서 경도상승 영역 alpha-case 층이 형성되었음을 확인하였다. In this study, TiAl alloy was fabricated by a centrifugal casting method for turbo charge of automotive. Optimum conditions for defectless morphology using various ceramic mold were investigated. The crystal structure, microstructure, and chemical composition of the TiAl prepared by centrifugal casting were studied by X-ray diffractometer (XRD), optical microscopy (OM), field emission scanning electron microscopy (FE-SEM) and energy dispersive spectroscopy (EDS), microvickers hardness analyzer (HV). Two kinds of dendrite structures were observed with 4-fold and 6-fold symmetries. The FE-SEM, EDS and HV examinations of the as-cast TiAl showed that the thickness of the oxide layer (${\alpha}$-case) was typically less than $50{\mu}m$.

고압산소치료의 구강악안면영역에서의 임상적 이용에 관한 연구

류정호,엄기훈,배준수,유준영,장명진,김용관 大韓口腔外科學會 2003 大韓口腔外科學會誌 Vol.27 No.5

최적 부하 임피던스와 하모닉 튜닝을 이용한 B급 고효율 전력 증폭기의 설계

류정호,조영송,신철재 대한전자공학회 1996 전자공학회논문지-A Vol.33 No.6

In this paper, harmonic-tuning method to achieve the maximum efficiency is proposed. Harmonic tuning method is applied to the optimum load impedance of a class B amplifier, which is extracted by using the modified cripps method. High efficiency power amplifier utilizing GaAs MESFET is designed and fabricated in the 835MHz band. The performance of th eamplifier is presented by having output power of 30.8dBm, drain efficiency of 80.5% and power added efficiency of 66% with an associated power gain of 7.4dB.

$Al_2O_3/SiC$ 나노복합체의 상압소결 및 역학적 특성에 미치는 볼밀분쇄와 소결온도의 영향

류정호,나석호,이재형,조성재 한국세라믹학회 1997 한국세라믹학회지 Vol.34 No.6

Al2O3/SiC nanocomposites are fabricated through intensive ball milling to mix fine SiC particles uniformly with the Al2O3 powder. Another role of milling is to reduce particle sizes by crushing particles as well as agglomerates. However, balls are worn during ball milling and the sample powder mixtures pick up to weight loss of the balls. In this study, pressureless sintering was performed to obtain Al2O3/SiC nanocomposites. It was found that the wear rate of zirconia balls during milling was considerable, and the zirconia addition after even a few hours of ball milling could increase the sintering rates of the nanocomposites significantly. Thus, addition of ZrO2 changed the sintering behaviors as well as mechanical properties of Al2O3/SiC nanocomposites.

고압산소치료의 구강악안면영역에서의 임상적 이용에 관한 연구

류정호,엄기훈,배준수,유준영,장명진,김용관,Lyoo, Jung-Ho,Um, Ki-Hun,Bae, Jun-Su,You, Jun-Young,Jang, Myung-Jin,Kim, Yong Kwan 대한구강악안면외과학회 2001 대한구강악안면외과학회지 Vol.27 No.5

Hyperbaric oxygen therapy(HBO) is defined as breathing 100% oxygen while in an enclosed system pressurized to greater than on atmosphere(sea level). This increased oxygen delivery furthers your body's ability to kill germs and to increase healing. HBO is a supplemental therapy to be used in addition to the current medical and surgical therapy you are receiving. HBO typically is used to complement treatments of medical problems such as bone infections, complication of radiotherapy, and certain chronic, non-healing wounds. On an emergency basis, the chamber also is used to treat problems such as carbon monoxide poisoning and the decompression sickness. We analysed stastically cases which are treated by hyperbaric oxygen therapy in point of oral and maxillofacial region on the Kangnam General Hospital for aid in comprehension and application of this therapy. Total 760 patients were treated at Gangnam General Hospital from July 1996 to September 1999. They were classified by region to Decompression sickness(DCS), Carbon monoxide poisoning(CO), General surgery(GS), Orthopedics(OS), Oral and Maxillofacial surgery(OMFS), others. Patients of Oral and Maxillofacial surgery were divided by diseses to Osteomyelitis, Osteoradionecrosis, Reconstruction, Bone graft, Difficult wounds, others. The results were as follows. 1. This institute conducts HBO therapy for DCS which takes up 62% and 10.5% for OMF region. 2. In OMF region, Osteomyelitis is 40%, Osteoradionecrosis is next, Bone graft, and Reconstruction is a row. 3. According to our precious study, HBO has been frequently conducted in OMF region compared to past, however, it is less actively conducted in this area for research than other conturies. Therefore, We need further application to the clinical use.

PAL SYNTHESIS을 위한 상태 CHDL ( C-BASED HARDWARE DESCRIPTION LANGUAGE ) 기술에 관한 연구 ( A Study on State CHDL Description for PAL Synthesis )

류정호,변상준,박광현,김희석 대한전자공학회 1991 대한전자공학회 학술대회 Vol.1991 No.1